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So after doing some research, I could not come up with a definitive answer if the 8.5/et 29f and 9.5/ et 23r. I know the tires will need some stretching but how much? Will there be extreme poke on the rim? I have heard they make a square setup and what are the dimensions on those. Would they fit too? Is rolling the fenders a good idea and does it cause any problems? Sorry for all of these questions, but im a noob when it comes to wheel fitment.

So I would either have to go with either the performance suspension or sport suspension. Performance is 1300 from tischer, but what would I expect to pay for the sports suspension from the dealership? Looking to stay OEM because of CPO. Will I have issues with the lower performance suspension?

Check out the classified section. People are selling low-mileage sport suspensions for next to nothing because they have upgraded to fancy aftermarket coilovers. People literally move these for a few hundred bucks. Just make sure you grab one from an LCi sedan.

I have oem 220m wheels from an 2010 m3 on my 2011 e92. They are 235/35/19 and 265/30/19. 19x8.5+29 and 19x9.5+23 and the DO fit. I have hankook v12. I'm on stock sport suspension and did not roll my fenders. I big bumps I barely rub in the rear. That only happened once though and I could barely tell it rubbed.

I have oem 220m wheels from an 2010 m3 on my 2011 e92. They are 235/35/19 and 265/30/19. 19x8.5+29 and 19x9.5+23 and the DO fit. I have hankook v12. I'm on stock sport suspension and did not roll my fenders. I big bumps I barely rub in the rear. That only happened once though and I could barely tell it rubbed.